Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Chemical requirement Composition(%)

Composition

ASTM A333 Grade 6

Carbon, max

0.30

Manganese

0.29–1.06

Phosphorus, max

0.025

Sulfur, max

0.025

A For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese.

TENSILE REQUIREMENTS

Data

ASTM A333 Grade 6

Tensile strength, min, psi (MPa)

60 000 (415)

Yield strength, min, psi (MPa)

35 000 (240)

Impact temperature

Minimum Impact Test Temperature -45 C(-50 F)

Impact requirements

Size

Minimum Average Notched Bar Impact Value of Each Set of Three Specimens

Minimum Notched Bar Impact Value of One Specimen Only of a Set

Size of Specimen, mm

ft-lbf

J

ft-lbf

J

10 by 10

13

18

10

14

10 by 7.5

10

14

8

11

10 by 6.67

9

12

7

9

10 by 5

7

9

5

7

10 by 3.33

5

7

3

4

10 by 2.5

4

5

3

4

Straight line interpolation for intermediate values is permitted.

Impact temperature reduction

Specimen Width Along Notch or Actual Material Thickness mm

Temperature Reduction,Degrees Colder C

10 (standard size)

0

9

0

8

0

7.5 (3/4 standard size)

3

7

4

6.67 (2/3 standard size)

5

6

8

5 (1/2 standard size)

11

4

17

3.33 (1/3 standard size)

19

3

22

2.5 (1/4 standard size)

28

P Number/ Group Number

ASTM A333

Grade 6

P Number

1

Group

1

Machinability

Machinability is good, similar to law alloy 4032 steel.

Forming

The product comes in piping form but may be formed readily by conventional methods.

Welding

Weldable by conventional methods.

Heat Treatment

Product is supplied in the normalized, 1500 f and air cooled, condition. It may be quenched and tempered by heating to 1475 F, quench in circulating water and then temper by re-heating to 1100 F and rapid air cooling.

Forging

Product is supplied in pipe form and not normally forged from that shape.

Hot Working

Hot working may be done qt 2000 F down to 1600 F if need be. Do not hot work below 1550 F and immediately following hot working cool in a controlled atmosphere furnace from a temperature above 1550 F.

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